Mounting corner



Apmifi 30, 1935. LEY 1,999,423

MOUNTI NG CORNER Filed Dec. 31, 1932 5 Q) wawar. v. A Jain A TTUR/VEKPatented Apr. 3%, 1935 FAN? Ei lCE 3 Claims.

This invention relates to corner mounts for attaching cards, photographsand similar articles to the pages of an album or to other flatsupporting surfaces.

One of the important objects of the present invention is the provisionof a corner mount having a transparent face which will not obscure theportion of the card or photograph mounted under said face and which issubstantially invisible.

Another object is the provision of a transparent corner mount which maybe made of diminutive size to permit its use for mounting postage stampsin collectors albums and elsewhere and which will not obscure the faceof the stamp.

A further object is the provision of a corner mount which will adaptitself to various thicknesses of cards or photographs mounted therein.

An additional object is the provision of a device of the characterdescribed which requires no folding and is ready for immediate use andwhich can be manufactured at an exceedingly low cost.

Other objects of the invention will be more specifically set forthhereinafter.

In the accompanying drawing showing one embodiment of the invention Fig.l is a plan view illustrating the use of a pair of corner mounts,constructed in accordance with the invention, for affixing a postagestamp to an album leaf or other flat surface; Fig. 2 is a plan viewshowing a blank of transparent material adapted to be cut from acontinuous strip for use in making the corner mount; Fig. 3 is a frontplan view of the blank with one corner folded underneath; Fig. 4 is aView in perspective of the blank in the condition shown in Fig. 3 asviewed from underneath; Fig. 5 is a front plan view of the blank withboth corners turned underneath into overlapping relation; Fig. 6 is aview in perspective of the blank in the condition shown in Fig. 5; Fig.7 is a rear plan view of the finished corner; Fig. 8 is a view inperspective of the backing provided with adhesive on both faces; andFig. 9 is a cross sectional view of the corner mount on line 9 in Fig.1.

Referring to the drawing, my invention is shown as embodied in a cornermount of right-angled triangular form, preferably made of transparentmaterial in order that the portion of the card or other article beingmounted which is inserted in the mount will be fully exposed and visiblethrough the face of the corner. Although any suitable transparentmaterial may be used for this purpose, I prefer to employ thin sheets ofthe cellulose hydrate known commercially as Cellophane because thismaterial can be made (Cl. 4ll-158) transparent and colorless and verythin and flexible and will not tear easily.

In the illustrated embodiment of the invention, the corner mountcomprises a face ll] of transparent sheet material having two flaps l2and it of triangular form folded over on contiguous lines it and H3, atright angles to each other, to form the back portion of the corner. Thisforms a pocket between the face and back portion with an opening l9 onthe hypotenuse side of the triangle.

The two flaps overlap at their adjacent edges in the back and to holdthem in that position a back piece it of fibrous sheet material such aspaper or the like is adhesively secured to the flaps. The back piece Ziiis preferably provided with adhesive on both faces so that it may befastened to the flaps by the adhesive on one face and the adhesive onthe other face may be used to fasten the corner mount to the surfaceupon which it is to be mounted.

The back piece is'of smaller area than the area of the corner mount inorder to leave a margin of transparent material projecting around thethree edges of the corner mount beyond the edges of the back piece whichis necessarily of opaque material. This accomplishes two purposes,first, it permits the corner mount to expand to take cards of diiferentthicknesses and, secondly, it eliminates the possibility of the edge ofthe back piece being visible when a card is inserted in the corner. Ifthe back piece covers the entire back of the corner, its edge will bevisible as a thin opaque line around the corner of the card inserted inthe corner mount which detracts from the appearance of the mounting. Atthe same time the back piece prevents the corner expanding to take athicker card. The two folded edges 22 and- 24 of the right-angled sidesof the corner are preferably rounded folds without sharp edges in orderto contribute to the expansibility of the corner mount and to permit thecorner of a card to be fully inserted into the mount and in engagementwith the folded edges.

In making the corner mount a rectangular blank 26 of suitable size iscut from a continuous strip 23 of cellophane or other suitable material(Fig. 2) which blank is folded along lines it and it, the flap i2 beingfirst turned over on the line it and then the flap it on the line 58.The line it extends from one side of the blank at, a point a slightdistance above the bottom line of the blank to a point slightly to theleft of the center of the top line of the blank. After the flap l2 hasbeen folded over, the flap M is then folded on line It, which line islocated on the other end of the blank in a position symmetrical withthat of line H3. The apex of the corner mount is therefore formed at thepoint 36 slightly below the upper edge of the blank which results in aslight launching of the material at point 32 (Fig. 5) but when thinmaterial is used, this bunching of the material is not noticeable andhas the advantage of closing the apex of the corner mount so that thereis no possibility of its being opened up when a card or other object isinserted therein. Another advantage of this method of folding is thatthe face H] of the corner mount projects on the hypotenuse side of thecorner a slight distance below the back portion of the corner whichfacilitates the insertion of the corner of a card or other object in themount.

In folding the two fiaps to form the back portion of the mount it isessential that the adjacent edges of these two flaps overlap anappreciable distance because if the edges are merely butted, theadhesive on the back piece when it is applied to the flaps willpercolate through the adjacent edges of the flaps and cause the backpiece to adhere to the front face portion of the corner mount. It istherefore essential that the joint between the two flaps should beoverlapped or closed sufiiciently to prevent the percolation of any,adhesive through the joint. In applying the back piece to the flaps theadhesive on one face thereof is moistened in any suitable manner and theback piece pressed to the flaps, care being taken in this operation toavoid pressure upon the edges of the corner mount because it ispreferable that they should remain'as rounded folds.

In the use of corner mounts made in accordance with my invention, fourmounts are placed on the four corners of the card or other object to bemounted, the adhesive on the backs of the mounts is then moistened andthe card is laid on the supporting surface and the corner mounts pressedthereto. When small objects such as stamps are to be mounted, two cornermounts placed at opposite diagonal corners of the stamp, as: shown inFigure 1, will be found sufficient.

Corner mounts made in accordance with my invention are especiallyadapted for use in mounting stamps because they can be made in a smallsize and being of triangular form in which the back portion does notproject beyond the front face, two mounts can be placed on the oppositediagonal corners of a stamp without interference one with the other. Theface of each mount covers a portion of the stamp large enough to preventcurling of the stamp and to hold it securely in place, and since theface is transparent, it does not obscure the face of the stamp.

It is to be understood that my invention may be embodied in forms ofconstruction other than that herein shown and described, all within thescope of the following claims.

What I claim is:

l. A corner mount of right-angled triangular form comprising atriangular face portion of thin cellophane and a triangular back portionof smaller area than said face portion made up of a pair of triangularflaps integral with said face portion and folded over on adjacentintersecting lines at right angles to each other into overlappingrelation at their adjacent edges, the surplus overlapped material at theapex of the mount being folded over to close said apex, and a triangularsheet of paper adhesively secured to said flaps to hold them inoverlapped relation, said sheet being of smaller area than said backportion in order to present transparent edges on both the front and backof said corner and having its exposed face coated with adhesive.

2. A corner mount of right-angled triangular form comprising atriangular face portion of cellophane and a triangular back portion andhaving a card receiving opening on the hypothenuse side of said mount,said back portion being of smaller area than said face portionpermitting said face portion to overlap said back portion on the saidhypothenuse side to facilitate the insertion of a corner of a cardwithin said mount and said back portion comprising a pair of flapsintegral with said face portion and folded over on adjacent lines atright angles into overlapping relation at their adjacent edges and atriangular sheet of paper adhesively secured to said flaps to hold themin overlapped relation, said sheet being of smaller area than said backportion in order to present transparent edges on both the front and backof said corner and having its exposed face coated with adhesive.

3. A corner mount of approximately right angled triangular formcomprising a rectangular blank of thin cellophane folded upon two linesat right angles to each other, each of said lines extending from one endof said blank adjacent the bottom edge thereof to intersect with theother of said lines at a point below and adjacent the top edge of saidblank, said folded portions being in overlapping relation with the surplus material at the apex of the corner mount folded over on the back ofsaid mount, and a triangular sheet of paper adhesively secured to saidflaps to hold them in overlapped relation, said sheet being ofsmallerarea than said back portion in order to present transparent edgeson both the front and back of said corner and having its exposed facecoated with adhesive.

LESTER S. RILEY.

